When electronic and electrical products enter Australia, in addition to safety labels, they should also have the EMC mark, also known as the c-tick mark. The purpose is to protect the resources of wireless communication frequency bands, and its implementation system is somewhat similar to the EMC directive in Europe Therefore, self declaration can be made by the manufacturer and importer. However, before applying for the C-tick logo, testing must be conducted in accordance with relevant CISPR standards. And it must be endorsed and reported by the Australian importer. The Australian Communications Authority (ACA) accepts and issues registration numbers uniformly.

Basic Introduction
In Australia, the EMC requirements for electrical products are monitored by the Austrian Communications Authority (ACA). In addition to the Australian and New Zealand Standards (AS/NZS), ACA recognized 103 other standards in 2002, including EN, IEC, and CISPR.
In order to limit the impact of electromagnetic interference, Australia has implemented mandatory requirements for electromagnetic interference (EMI) for all products within the standard range since January 1999. Some EMC experimental projects must also comply with mandatory requirements, including conducted interference, intermittent interference (clicking sound), and radiated interference. Other EMC projects are not mandatory. The C-Tick logo can only be affixed to products that have been inspected and meet relevant standards. Any company or individual who wants to use this logo must apply to the government regulatory department and obtain written approval before use, and the height of the logo must not be less than 3 millimeters.

Information identification
The information of the Australian supplier must be marked next to the C-Tick logo according to regulations, so that ACA can effectively trace the supplier responsible for EMC of the product when sampling products in the market. The identification of information includes four aspects:
1. Registered name and address of Australian suppliers.
2. Australian Company Number
3. The number issued by ACA to Australian suppliers.
4. The Australian registered trademark used for the product in the Australian market.

Product division
The EMC system in Australia divides products into three levels, and suppliers must register with ACA and apply to use the C-Tick logo before selling Level 2 and Level 3 products.
Level 1 products refer to products with low interference and radiation to devices using wireless spectrum, such as manual switches, simple relays, unidirectional squirrel cage induction motors, resistors, etc. For Level 1 products, suppliers must sign a conformity statement and provide a product description. Level 1 products can voluntarily apply for the C-Tick logo, but after choosing to use the logo, suppliers must provide a compliance statement and product description, as well as compliance records, to prove that the products described in the statement have complied with relevant EMC standards. No specific testing location is required, internal testing is allowed.
Level 2 products refer to products that have high interference and radiation to devices using wireless spectrum, such as switching power supplies, welding machines, dimmers, and most household appliances. In addition to signing a conformity declaration and providing a product description, suppliers must also provide test reports conducted in accordance with relevant standards. If there are no relevant standards, technical structural documents must be provided, and the testing location is not required. Internal testing is allowed.
Level 3 products refer to products that have extremely high interference and radiation to devices using wireless spectrum, namely products covered by CISPR11 and CISPR22. At present, communication terminal products are still included in this scope, but from November 7, 2003, terminal products will be classified as Level 2 products. In addition to signing a conformity declaration and providing a product description, suppliers must also provide a test report issued by a recognized testing agency. At the same time, a quality management system certificate issued by the QSM certification body must be provided.

The scope of C-TICK certification is as follows:
According to the mandatory electromagnetic compatibility product catalog released by the government in 2001, the main products involved are:
Industrial, technological, and medical (ISM) equipment, audiovisual equipment;
● Household electrical appliances;
● Electric tools and heating appliances;
● Lighting and similar equipment;
● Information technology equipment.
The products that do not require application are:
Devices manufactured outside of Australia and not intended for import into Australia for sale;
Devices imported from New Zealand for sale in Australia that comply with relevant regulations in New Zealand;
Products that are not within the scope of application.